e vs AQS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
e
This tool allows water quality professionals to collect, manage, analyze, and track water quality test parameters. It is designed for water treatment facilities and professionals in the field.
- Water quality data collection
- Data management
- Analysis of test parameters
- Tracking of water quality
- Designed for professionals
- Supports water treatment facilities
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The e-sens ROAM app is a free water quality collection tool to gather, manage, analyze and track all your water quality test parameters. Built for Water quality professionals and water treatment facilities.
AQS
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Designed for water leak detection service providers or water utilities personnel. Aquarius-Spectrum™ installation tool provides: * Sensor mapping * Create Devices * Enable reviewing results on the web application * Online expert support available Simple, user friendly & cost effective.
Screenshots
Verdict
e and AQS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
e ships an update every 2 months, AQS every 5 weeks. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.
| Parameter | e | AQS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 32 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | e-sens, Inc. | Aquarius-Spectrum |
In-app purchases
e
No in-app purchases
AQS
No in-app purchases
